package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constants.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.jwt.JwtUtil;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.atguigu.lease.web.admin.vo.system.user.SystemUserInfoVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import io.jsonwebtoken.Claims;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.lang3.ObjectUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private RedisTemplate<String,Object> redisTemplate;
    @Autowired
    private SystemUserService systemUserService;

    @Override
    public CaptchaVo sendCode() {
        //生成验证码
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);
        String imageBase64 = specCaptcha.toBase64();
        String code = specCaptcha.text();

        //正确输入验证码值+UUID 保存到redis中
        String uuidKey = RedisConstant.ADMIN_LOGIN_PREFIX +UUID.randomUUID().toString().replaceAll("-","");
        redisTemplate.opsForValue().set(uuidKey,code,RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);
        //返回验证码
        CaptchaVo captchaVo = new CaptchaVo(imageBase64,uuidKey);
        return captchaVo;
    }

    @Override
    public String login(LoginVo loginVo) {
        //校验验证码是否过期
        String redisCode = (String) redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (ObjectUtils.isEmpty(redisCode)) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        //校验验证码是否正确
        if (!redisCode.equalsIgnoreCase(loginVo.getCaptchaCode())) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        //校验账号是否存在
        LambdaQueryWrapper<SystemUser> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(SystemUser::getUsername,loginVo.getUsername());
        SystemUser systemUser = systemUserService.getOne(lambdaQueryWrapper);
        if (systemUser == null){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }
        //校验密码是否正确
        String password = DigestUtils.md5Hex(loginVo.getPassword());
        if (!systemUser.getPassword().equals(password)){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }
        //校验用户状态是否可用
        if (systemUser.getStatus()== BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }
        //创建token发token
        String token = JwtUtil.createToken(systemUser.getId(),systemUser.getUsername());
        return token;
    }

    @Override
    public SystemUserInfoVo customInfo(String accessToken) {
        //解析token并且获取claims
        Claims claims = JwtUtil.parseToken(accessToken);
        //claims获取userID
        Integer userId = (Integer) claims.get("userId");
        //用token查询数据
        SystemUser systemUser = systemUserService.getById(userId);
        //systemUserInfoVo
        SystemUserInfoVo systemUserInfoVo = new SystemUserInfoVo();
        systemUserInfoVo.setName(systemUser.getName());
        systemUserInfoVo.setAvatarUrl(systemUser.getAvatarUrl());
        return systemUserInfoVo;
    }
}
